Lock structure



Aug.- 4, 1925.

J. B. FREYSINGER LOCK STRUCTURE Filed Feb. 6. 1923 gmenl oz Patented Aug. 4, 1925.

UNITED STATES PATENT OFFICE.

JOHN B. retirement, or STAMFORD, connnomrcur, ASSIGNOR TO THE YALE & TOWNE MANUFACTURING? CoM-rnNY, or STAMFORD, CONNECTICUT.

LOCK s'rntfCruRE.

Application filed F'e-Bruary 6, rm. Serial N t-[617,361.

To all tuhomi't may corwemr Be itEno-wn that I, JOHN B. FREYSINGER, a citizen of the Uni-ted States, and a resi= dent of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improve mnts iii- Lock Structures; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled the art to which it appertains to make and use the same.

This invention relates to improvements in look structures and more particularly to means whereby thesame are armored, one object of the invention being to provide a lock structure of the "cylinder type" which shall be effectually protected again'st access of a boring tool applied at any poiht between the ends of a lock cylinder or applied in the direction of t'he front end of the cylinder or the front end portion of the lug or barrel member of the lock.

With this and other objects in view, the invention consists in certain features as'her'einafter set forth and pointed out in the claims. p y

In the accompanying dlrawin'gs a Figure I a view partly in se'ctioi'u and partly in elevation, showing one embodiment of my invention as applied to a lock cylinder. p

Figures 2 3, 4:" and 5- illu'strate modifications of the same. I

Figure 6 is a sectional View showing the application of my improvements to the plug or barrel of the lock, and

Figures 7 and 8 are views illustrating modifications of the armoring of the plug or barrel.

In Figure 1 of the drawing, I have shown the cylinder or casing 1 of a lock as being threaded exteriorly and the plug of the lock is represented by the dotted lines at 2.

The lock casing or cylinder 1 is surrounded from end to end by a shell 3 of'hardened metal, preferably steel, and this shell is threaded interiorly to mesh with the threads on the cylinder or casing 1. At its forward end the shell is made with an integral member 4 which is disposed in front of the cylinder or casing 1 and it is provided with an opening 5 in line with the plug or barrel member of the lock.

From the above it will be apparent that the hardened metal armor 3% will eifecdirectly opposite the recess' fi in the cylinder and theserecesses' 6' and 7 theses-operate to form a socket into which a locking pin 8 is driven, said locking thus entering" both the lock cylinder and the armor sheila The hick plug is also provided with an armor shell 9 of hardened metal which may extend from end; to end of said plug. as

'sl iown Figure o and: provided with ahead portion 10 disposed in front of said plug. The armor shell 9 is rigidly secured to the plug" near the rear end thereot by means of pin 11 passingthrough the armor 9- and entering the plug;

Instead of extending the plug armor from the front to the rear end of. the plug, said armor may be made: to encircle the front end portion only of the plug. as indicated at 1-2; 2Figur'e' 7 and secured to said plug by means of a pin 13 passing through said armor and entering the plug If desired the front end portion of the plug may be reduced somewhat in external diameter as indicated at 14', Figure 8', and the: armor 15 made to surround such reduced portion and its outer face be flush with the outer face of the main portion of the plug.

I have shown the armored plug construction illustrated in Figure 6, in place in the cylinder shown in Figure 2, but it is evident that this or any of the armored plug'structures may be embodied in the cylinders shown in Figures 1, 3, 4 and 5.

In the embodiment of the invention shown in Figure 2, the outer wall of the cylinder 1 and the inner wall of the armor shell 3 are made plain or smooth and provided at their rear end portions with threaded recesses 16 and 17 respectively for the reception of a screw 18,said screw thus entering both the cylinder and the armor shell and serving to lock these parts together.

In the embodiment of the invention shown in Figure 3, the rear end portion of the cylinder 1 is provided with a recess 19 and the rear end portion of the armor shell 3 is cut to form a lug or ear 20 which is bent into said recess 19 to lock the shell to the cylinder.

In the form of the invention shown in Figure 5, the lock cylinder 1 is provided with a transverse slot or kerf 21 and the armor shell 3 is made with a transverse slot 22 in alignment with the slot or kerf 21 in the cylinder. A wedge or key 23 is passed through the slot 22 in the shell and driven into the slot or kerf 21 in the cylinder, thus locking the cylinder and shell together.

Instead of securing the armor shell to the cylinder in any one of the ways above described, the shell may be secured in place on the cylinder in a manner similar to the manner in which the armor is secured to the plug shown in Figure 6,-viz, by means of a pin 24 passing transversely through the wall of the shell 3 and entering the cylinder 1, as shown in Figure 1.

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is:

1. The combination of a cylinder lock and a hardened metal armor closely surrounding said look from end to end thereof and covernig the front of the lock casing, said armor conforming to the contour of the cylinder lock, and means positively securing said armor and cylinder look from relative movement.

2. The combination of a cylinder lock and a hardened metal armor shell closely surrounding and embracing the same from end to end and having an integral hardened metal part disposed in front of and contacting the lock, said lock and armor shell being rigidly secured together.

3. The combination with a member of a cylinder lock, of a hardened steel shell closely surrounding said member from end to end, and means rigidly securing said shell and lock member and entering the wall of the latter.

1. The combination with the casing member and the plug member of a cylinder lock, of hardened steel armor surrounding each of said members, the armor on the casing member extending from end to end thereof.

5. The combination with the casing member and plug member of a cylinder lock, of a hardened metal armor member surrounding each of said first mentioned members, and means securing said armor members to the casing member and plug members respectively, the armor member on the casing member extending from end to end thereof.

6. The combination with the casing member and plug member of a cylinder lock, of hardened metal armor members surrounding said cylinder and plug members from end to end thereof, and means securing said armor members to the cylinder and plug members respectively.

7. The combination with a lock cylinder having a recess near its rear end, of a hardened metal armor shell surrounding said cylinder from end to end and having an interior recess opposite the recess of the cylinder, and a securing device entering the recesses of the cylinder and armor shell respectively.

8. The combination of an exteriorly threaded lock cylinder, an interiorly threaded armor shell surrounding said cylinder from end to end, and fastening means entering both the cylinder and armor shell and securing said parts together.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

JOHN B. FREYSINGER. WVitnesses:

CHARLES LEDIN, CHARLES A. BERRY, 

